Chapter 8.2, Problem 1CYU

a.

To determine

Calculate the critical value and the critical region at the significance level of $\alpha =0.05$.

b.

To determine

Decide whether the null hypothesis $H_0$ is rejected at level $\alpha =0.05$.

c.

To determine

Obtain the critical value and the critical region for a significance level of $\alpha =0.01$.

d.

To determine

Decide whether the null hypothesis $H_0$ is rejected at $\alpha =0.01$ level.